நானோ அறிவியல் இதழ்: தற்போதைய ஆராய்ச்சி

In present work, the modified 3-dimensional modified radial Schrödinger equation is analytically solved for the nonrelativistic interactions under the modified quark-antiquark interaction potential in the symmetries of Non-Commutative Quantum Mechanics (NCQM), using the generalized Bopp’s shift method in the case of perturbed Non-Relativistic Quantum Chromodynamics (pNRQCD). The new energy eigenvalues (ground state, first excited state and nth excited state) and the corresponding Hamiltonian operator are calculated in 3-dimensional Non-Commutative Real Space Phase (NC: 3D-RSP) symmetries instead of solving modified Schrödinger Weyl Moyal star product. The present results, in (NC: 3D-RSP), are applied on the charmonium , bottomonium and mesons. It is found that the perturbative solutions of discrete spectrum and quarkoniums mass can be expressed by the the parabolic cylinder functions function, Gamma function, the discreet atomic quantum numbers ( j, l, s, m) of the state and the potential parameters (a,b,c), in addition to non-commutativity parameters ( Θ and ). The total complete degeneracy of new energy levels of the modified quark-antiquark interaction potential changed to become equals to the value 3n2 instead the values n² in ordinary Commutative Quantum Mechanics (CQM). Our obtained results are in good agreement with the already existing literatures in NCQM.

Plant extracts traditionally used in ancient medical systems such as Ayurveda and Unani for thousands of years is now being revisited with interests turning towards utilizing them as biologically synthesized nanoparticles with better delivery. Cissus quadrangularis Linn. is one such important medicinal plant belonging to the family Vitaceae. In India, C. quadrangularis stems are widely used as medicine as well as in traditional cuisine owing to the presence of several bioactive compounds in it. In the present study, parts of C. quadrangularis plant were collected and ethanolic (Soxhlet and cold centrifuge) extracts were made from fresh and dried samples. Green synthesis of silver nanoparticles with extracted C. quadrangularis was carried out and its efficacy was checked. Phytochemical properties of C. quadrangularis extract was evaluated and various pharmacological properties such as anti-microbial, anti-oxidant, anti-inflammatory and anti-cancerous properties of both C. quadrangularis extracts and C. quadrangularis loaded sliver nanoparticles were assessed and compared. Overall, the green synthesized C. quadrangularis loaded silver nanoparticles had positive pharmacological properties, which were demonstrated in-vitro through this study.

This work aims the temperature and frequency dependence dielectric properties of Eu₂O₃ doped SrTiO₃ (STO) nanoceramic synthesized by solid state reaction method. The crystalline structure, microstructures of SrTiO₃ polycrystals doped with Eu³⁺ at different compositional ratios were studied by XRD and SEM analyses. The X-ray spectra show that the synthesized powder has cubic structure. From the dielectric behavior it was possible to identify that Eu doping produces changes with respect to pure STO. Dielectric constant was found to decrease with increase in frequency and increase with doping content and sintering temperature.